A mathematical model for world population growth over short intervals is given by P = Po o rt. where Po is the population at time t= O, r is the continuous compound rate of growth, t is the time in years. and P is the population at time t. How long will it take the world population to triple if it continues to grow at its current continuous compound rate of 1.1% per year? Substitute the given values into the equation for the population. Express the population at time t as a function of P0. DPU = PDeDt {Simplify vour answers.) The population will triple in about El years. [Type an integer or decimal rounded to one decimal place as needed.)